oEmbed for Ruby

Ruby library for accessing low-level information on ogg files

native mixin to speed up ChunkyPNG

fast JSON parser and serializer for Ruby

Oj introspect parser.

Ruby library for read/write access for OLE compound documents

flexible authentication system utilizing Rack middleware

Omniauth strategy for AliCloud

Atlassian OAuth2 strategy for OmniAuth 1.x

Authentiq strategy for OmniAuth

OAuth 2 authentication with the Azure ActiveDirectory V2 API

Omniauth strategy for DingTalk

Oauth2 facebook strategy for OmniAuth

GitHub strategy for the Ruby OmniAuth library

OAuth2 strategy for authenticating to GitLab service

Google OAuth2 strategy for OmniAuth 1.x

abstract OAuth2 strategy for OmniAuth

generic OmniAuth strategy for OAuth2 providers

Wordpress strategy for OmniAuth

library for managing child processes in Ruby

OpenGraph protocol parser

Ruby library for verifying and serving OpenID identities

OpenID Connect Server & Client Library

helpers for signing and verifying signatures with openssl

OpenStack Ruby API

openuri patch to allow redirections between HTTP and HTTPS

Commandline parser for Ruby that just gets out of your way

Emacs org-mode parser for Ruby

Simple DSL for MongoDB query generation

single point of entry for using basic features of ruby ORMs

Simple and easy way to know if you're on windows or not (reliably)

Off The Rails: Use ActiveRecord with Grape, Sinatra, Rack, or anything else!

fast XML parser and object serializer

extensive packing and unpacking capabilities for Ruby

mid-level packet manipulation library for Ruby

terminal paint library with 256 color and effect support

Pango bindings for the Ruby language

library to run any kind of code in parallel processes

Run Test::Unit / RSpec / Cucumber / Spinach in parallel

re-implementation of acts_as_paranoid for Rails 3

Simple standard configuration file parser for Ruby

parse cron expressions and calculate next job occurrence

Parser construction library with great error reporting in Ruby

Ruby library for handling passwords

terminal strings styling with intuitive and clean API

PathExpander helps pre-process command-line arguments

alternate implementation of the Pathname class

Library to match path patterns such as gitignore

Faster pure Ruby implementation of Pathname with extra bits

Ruby bindings for LBL Packet Capture library (libpcap)